Pivotable shelf



FIG. 1 is an upper perspective view of the pivotable shelf;

FIG. 2 front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof with optional components in phantom lines and not a claimed part of this invention. 

CLAIM The ornamental design for a pivotable shelf, as shown and described. 